Thread and yarn friction-guide



I. RODGER.

THREAD AND YARN FRICTION GUIDE.

APPLICATION nuzu JAN. 14. um.

1,399,521. Patented Dec. 6, 1921.

2 SHEETS-SHEET I.

J2 l:-- o 4 [N VEJV T 012 Jain Km? J. RODGER- EHREAD AND YARN FRICTIONGUIDE.

APPLlCATION FILED JAN. 14. I921.

1,399,5 Patented Dec. 6, 1921. 2 SHEETS-SHEET 2- f 5 a l I .2? .Jf

-123 A \ia/m 4:

i z al" aw lfEH STATES THREAD AND YARN FRICTION-GUIDE.

Specification of Letters Patent.

Patented Dee, e, 1921..

I Application filed January 142, 1921. Serial No. 437,146.

To all whom it may concern:

Be it known that l, JOHN Rononn, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented new and useful Improvements in a Thread andYarn Friction-Guide, of which the following is a specification. a

My invention relates to new and useful improvements in a thread and yarnfriction guide, which is particularly adapted for use for bobbin windersalthough it is ap plicable to other machines wherein thread or-yarn isused which must be guided and maintained under tension, and has for itsobject to provide a guide of this character which will give the propertension to the thread as well as provide for the instant relief thereofshould the same become knotted or entangled thereby overcoming thepossibility of breakingthe thread or yarn and stopping the operation ofthe machine.

Another object of the invention is to provide a thread and yarn frictionguide provided with a plurality of guide blocks be tween adjacent onesof which are operable spring pressed tension fingers, said blocks andportions of said fingers consisting of non metallic bearing surfaces andmore particularly a suitable vitreous material such as porcelain orglass. 1

Another object of the invention is to provide a suitable elasticmaterial as a part of the tension fingers with which coact adjustingscrews to limit certain movements of said fingers. i 7

Another object of the invention is to pro vide a tension spring havingtension fingers and to provide means for adjusting said spring andretaining the same in its adjustment. 1 A further object of theinvention is to pro vide a guide adapted to be interposed between a copand a bobbin consisting of a base having a yoke for attachment toasuitable support, said base carrying a number of guideblocks, eachhaving a groove therein the upper surfaces of which are inclined fromsaid grooves, a pivoted finger supporting plate carrying tension fingersnormally forced between the guide blocks by a spring actingupon thefinger plate, said fingers consisting of two different materials andmeans for adjusting the tension or spring action exerted upon the fingersupporting plate.

With these ends in view, this invention consists in the details ofconstruction and combination of elements hereinafter set forth and thenspecifically designated by the claims.

in order thatthose skilled in the art to which this inventionappertains, may understand how tomake and use the same, I will describeits construction in detail, referringby numerals to the accompanyingdrawings forming a part of this application, in which z j Figure 1, isaside elevation or edge view of my improved thread and yarn frictionguide illustrating diagrammatically its location relative to a bobbinand a cop.

Fig. 2, is an enlarged plan view of my improved friction guide, portionsthereof being broken away and shown in section to illustrate theconstruction for varying the tension of the spring. Fig. 8, is a sideelevation or edge view thereof. I

Fig. 4, is an end view thereof.

lfn carrying out my invention as here embodied, 2 represents a suitablebase or frame preferably formed of cast metal and provided with lateralrecesses 3 in its upper face, said recesses being arcuate in crosssection. With the underside of the base or frame 2 is formed a yoke 1whereby it may be at tached to a suitable support 5 as shown in Fig. 1,said base being held in suitable adjustment by means of set screws 6passing through the arms of the yoke, while with one side are formedtheintegral ears 7 and 8, one of which is adjacent the end of the base.lnthe ear 8 is formed a chamber 9 into which project suitably spacedlugs 10 for coaction with the head 11 of the pintle rod 12, said pintlerod passing through both the ears 7 and 8. ln the ear 7 is formed acavity 13 which houses the spring 1 1, one end of said spring restingagainst the inner end wall of the cavity 13 as the stationary member andthe other end resting against a nut 15 or its equivalent mounted on theend of the pintle rod 12 as the movable member so that the action ofsaid spring will hold the head 11 of the pintle rod within certainspaces between the lugs 10 or in engagement with certain of said lugs toprevent rotation of the pintle rod.

On the pintle rod is pivoted or journaled a finger supporting member 16by means of the extensions 17 formed therewith and lying at right anglesthereto and this finger supporting plate is normally held in theposition illustrated herein or virtually at right angles tothe base bymeans of a coil spring 18 mounted upon or coiled about the pintle rod12with one end connectedto the finger;

supporting plate as at 19 while the other end'is connected with thepintle rod in some suitable manner, it being here shown connected as at20 to a nut 21 or its equivalent jammed upon the pintle rod or otherwiseconnected therewith to normally prevent .the same moving relative to thepintle rod.

On the finger supporting plate are mounted a plurality of spaced tensionfingers 22 positioned to register with the lateral recesses 3 and saidfingers are preferablyiormed of two materials, the'outer portionsrepresented by the numeral 23 being of non metallic substance oravitreoussubstance suchas porcelain or glass while the inner portionsmay be of a suitable or flexible resilient material such as rubber asindicated at24, said resilient material actingas a cushion as will behereinafter more fullyexplained. The substance or material from whichthese fingers are made are preferably tubular in form and have passingtherethrough screws 25 which also pass through the finger supportingplate and have nuts 26 screwed on their projecting ends so as tosecurely fasten the ends of the stop screws. These screws may beadjusted tolimit the downwardorinward movements of the tension fingersas will be obvious in order that'the distance of said movements may beregulated according to the weight or size of the thread or yarn beingused. 7 7

Between the adjacent lateral recesses and on the outside of each of theendmost of said recesses are located the guide blocks 28, the same beingmountedupon the upper face of the base 2 and formed of some suitable nonmetallic vitreous substance such as porcelain or glass and are held inplace by screws 29 or their equivalent passing through said blocksandthe base 2 with nuts 30 or other similar retaining means mounted ontheir projecting ends. Intermediate the ends of these guide blocks areformed guide grooves 31 and the upper surfaces of said blocks areinclined in opposite directions from said groove as shown in Fig. 4 andindicated by the numeral 32 so that if the thread or yarn happens torest or strike upon said upper surface of the guide blocks it will havea tendency to move toward. the

guide grooves 81 and this movement of said in through said grooves.

in practice the thread and yarn friction guide is used with differentclasses of machinery where it is necessary to convey a strand of threador yarn from one point to another and is particularly adapted for usewith bobbin winders and is located at some suitable point between thecop 33. Fig. 1, and the bobbin 34 so that the thread or yarn 35 beingwound on the bobbin from the cop will be properly guided and held undertension so that said bobbin will be tightly wound. During the passage oithe thread or yarn through the guide should. the same become knotted ortangled so as to produce a drag on the thread or yarn as the knotted ortangled portion entered the space between one of the guide blocks andits adj acent finger, said tension fingers will be raised against theaction of the tension spring 18 and permit that portion of the thread oryarn running under the fingers and over the guide blocks to bestraightened out allowing the knotted or tangled portion to pass by themwithout causing a. sufiicient drag on the automatic stop mechanism (notshown) to stop the operations of the bobbin winder, but as soon as theknotted or entangled portion has passed beyond my friction guide thetension fingers thereof will again assume their normal positions andforce the thread or yarn down into the lateral recesses 3 between theguide blocks 28.

It is well known that where metal guide blocks are used in devices ofthis character the thread or yarn soon wears small grooves or notches inthe surface thereof which causes the thread or yarn to be stripped,shredded or out making it difiicult to use the thread or yarn because ofthe likelihood of the same breaking and often causing the same toactually break so that it is necessary to rethread the parts causingconsiderable loss of time, but these disadvantages are entirely overcomeby the use of the non metallic guide blocks and fingers for when made ofvitreous material such as glass or porcelain exceedingly smooth surfacesare providded which will not become grooved or itte p Of course I do notwish to be limited to the exact details of construction as herein shownas these may be varied within the limits of the appended claims withoutdeparting from the spirit of my invention.

Having thus fully described my invention, what I claim as new and usefulis 1. In a device of the character stated, a base provided with meansfor attachment to a suitable support and having lateral recesses arcuatein cross section, vitreous guide blocks mounted on said base on eachside of said recesses, said guide blocks having transverse guide groovesintermediate their ends and havingtheir upper surfaces inclined inopposite directions from said guide grooves, ears formed with the baseand projecting therefrom, one of said ears having a cavity and the othera chamber therein, spaced lugs formed with the ear provided with thechamber and projecting into said chamber, a pintle rod passing throughsaid cars, a head on each end of said pintle rod and adapted to engagethe lugs on one of the ears, a nut on the opposite end of said pintlerod, a spring within the cavity of one of said ears and engaging saidnut to normally force the head of the pintle rod into engagement withthe aforementioned lugs, a finger supporting plate journaled on saidpintle rod, a tension spring coiled about said pintle rod and having oneend connected with said plate and with said rod, and a plurality offingers including non metallic portions carried by said plate andpositioned to pass between the guide blocks and enter the lateral recesses.

2. In a device of the character stated, a base provided with means forattachment to a suitable support and having lateral recesses arcuate incross section, vitreous guide blocks mounted on said base on each sideof said recesses, said guide blocks having transverse guide groovesintermediate their ends and having their upper surfaces inclined inopposite directions from said guide grooves, ears formed with the baseand projecting therefrom, one of said ears having a cavity and the othera chamber therein, spaced lugs formed with the ear provided with thechamber and projecting into said chamber, a pintle rod passing throughsaid ears, a head on each end of said pintle rod and adapted toengagethe lugs on one of the ears, a nut on the opposite end of saidpintle rod, a spring within the cavity of one of said ears and engagingsaid nut to normally force the head of the pintle rod into engagementwith the aforementioned lugs, a finger supporting plate journaled onsaid pintle rod, a tension spring coiled about said pintle and havingone end connected with said plate and with said rod fingers eachcomprising a tubular elastic section at its inner end and a tubularporcelain section at its outer end, a screw passing through saidsections and finger supporting plate, a nut on the projecting end ofsaid screw, the porcelain outer end sections of said fingers beingpositioned to enter between the guide blocks in the region of the guidegrooves in said blocks, and stop screws threaded through the base andentering the lateral recesses in the region of the elastic inner endportions of the tension fingers so as to contact therewith and limit theinward or outward movement of said tension fingers.

In testimony whereof, I have hereunto afiixed my signature. v

JOHN RODGER.

